Safety and Stability Evaluation of Open-Pit Mining Sites Based on AHP and Fuzzy Mathematical Methods
Through in-depth analysis of the three units of mining and stripping,transportation,and blasting in a certain open-pit mine,based on the analytic hierarchy process,a safety production stability evaluation model for open-pit mining sites is established,and a weight analysis on the influencing factors of the model's index layer is made by the Delphi method.At the same time,taking the fuzzy mathematical evaluation theory as the core means,the three units of mining and stripping,transportation and blasting are divided into human factors and natural factors.The Cauchy distribution and trapezoidal distribution function are selected as the membership function to make a fuzzy analysis on the factors affecting stope safety,and a fuzzy judgment matrix is established.Finally,according to the maximum membership evaluation principle,it is concluded that the production safety of the open-pit stope is in a stable state.However,the proportion of unstable factors in the mining area is also relatively high,and management still needs to be strengthened.
open-pit mineanalytic hierarchy process(AHP)fuzzy judgment matrixsafety production and stability evaluation
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